Light Waves I - SS3 Physics Past Questions and Answers - page 2
Waves from which of the following regions of the electromagnetic spectrum is used for medical imaging
Infrared radiation
Microwaves
X-rays
Gamma rays
The region with the longest wavelength of the electromagnetic spectrum is
Gamma rays
X-rays
Ultraviolet radiation
Radio waves
What is visible light and why is it unique?
This is the only portion of the electromagnetic spectrum that can be seen by the human eye. It includes the colours of the rainbow and has wavelengths ranging from approximately 400 to 700 nanometers.
How is the electromagnetic spectrum divided?
The different regions of the electromagnetic spectrum are distinguished by their wavelengths and frequencies, and they have different properties and behaviours.
Light has the following behaviours except
Refraction
Diffraction
Penetration
Reflection
The understanding of the behaviours of light has practical applications in all except
Optics
Mechanical engineering
Astronomy
Medicine
Reflection of light occurs when ________
light waves bounce off a surface and pass through it
light waves bounce off a surface and change direction
light waves bounce off a surface and stop propagation
light waves bounce off a surface and heat up the surface
Refraction of light occurs when ________
light waves pass through the surface of a medium
light waves pass through an intersection of air and space
light waves pass through a boundary between two different mediums
light waves pass through a camera lens and form an image
Diffraction of light occurs when ________
light waves bend around a filter
light waves bend through an obstacle
light waves bend an obstacle
light waves bend around an obstacle
What effect does refraction have on a light wave travelling through two mediums?
This behavior is responsible for the bending of light that we see when we look at objects through lenses, such as glasses or telescopes.